| Year | 1969 |
| Date | 03-Oct |
| Volume | 135 |
| Issue | 3,378 |
| Page | 963 |
| Category | Stationary Engine |
| Part | |
| Title | Overtype Semi-Portable Engines |
| Author | W.J.Hughes |
| Notes | Ruston Proctor, high pressure engines, double-cylinder engines, locomobiles, Marshall locomobiles, superheater and condenser, other extras |